The analysis of the large systems blackouts during the last years have pointed out the need for the function of RealTime Wide Area Monitoring, Protection And Control (RT WAM PAC). Phasor Measurements (PM) has proved to be the vital source of data necessary for many applications in power system RT WAM PAC. The paper explains this new technology, the reasons behind its use and points out the role it plays in the overall view of RT WAM PAC. The recent applications of the Synchrophasors projects allover the world is highlighted. Generic and specific technical requirements for Synchrophasors Measurements are explained. The paper also illustrates, using actual recorded case from the fault recording system in the Egyptian Power Network, how the synchronized voltage phasors at different locations within the system, could be presented to the system operator during different operating states, using a software program designed specially for this purpose. A pilot project for PM in Egypt using the existing Disturbance Recorders is presented showing the benefits which could be gained from such a project.
This paper describes the failure modes in the capacitor banks installed in the Egyptian Network over the past years. The study has focused on the capacitor banks installed at the MV side of the HV substations in the Egyptian Transmission Network. Failures of capacitor units/banks in substations can be detrimental to the supply of reliable power to consumers. Failure analysis, failure mechanism, failure origin and physical damage causes were studied, not only from the manufacturing point of view, but also from the utility prospective in order to enhance the utility reliability. The results of the study on 457 capacitor banks of about 2383 MVARs capacity revealed the main causes of capacitor accidents, and sum up experiences in the Egyptian Electricity Utility.
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